string="hello world" prefix="hello" if string.startswith(prefix): new_string=string[len(prefix):] print(new_string) else: print("字符串不以指定子串开头") ``` 上述代码首先判断字符串是否以指定子串开头,如果是,则利用切片操作去除该部分,得到新的字符串`new_string`。否则,输出提示信息。 二、使用...
一,摘自官方API https://docs.python.org/3/library/stdtypes.html#methods str.startswith(prefix[,start[,end]]) ReturnTrueif string starts with theprefix, otherwise returnFalse.prefixcan also be a tupleof prefixes to look for. With optionalstart, test string beginning at that position. With opt...
可以使用startswith和endswith方法来进行判断。下面是一个示例: string="Hello, world!"ifstring.startswith("Hello"):print("The string starts with 'Hello'.")else:print("The string does not start with 'Hello'.")ifstring.endswith("world!"):print("The string ends with 'world!'.")else:print(...
result = text.startswith('program',7,18) print(result) Run Code Output True False True Passing Tuple to startswith() It's possible to pass a tuple of prefixes to thestartswith()method in Python. If the string starts with any item of the tuple,startswith()returnsTrue. If not, it ret...
if string1.startswith("Hello"): print("字符串string1以'Hello'开头") else: print("字符串string1不以'Hello'开头") ``` 这段代码将输出:"字符串string1以'Hello'开头",因为变量string1的值是"Hello, world!",它以"Hello"开头。 2.检查多个字符串的前缀: ```python string2 = "apple" if string...
>>> if s.startswith('hel'): print "you are right" else: print "you are wrang" you are right 1. 2. 3. 4. 5. 函数:endswith() 作用:判断字符串是否以指定字符或子字符串结尾,常用于判断文件类型 一、函数说明 语法:string.endswith(str, beg=[0,end=len(string)]) ...
string.startswith(value, start, end) Parameter Values ParameterDescription valueRequired. The value to check if the string starts with. This value parameter can also be a tuple, then the method returns true if the string starts with any of the tuple values. ...
i = "java" if i.startswith("j"): print("字符串以 'j' 开头") 下面是一个示例程序,用户输入一个字符串,并判断该字符串是否以 "j" 开头,如果是,则输出该字符串: input_string = input("请输入一个字符串:") if input_string.startswith("j"): print("输入的字符串是:", input_string) ...
相关函数:判断字符串开头startswith() 语法: string.endswith(str, beg=[0,end=len(string)]) 例子一: str ="this is string example...wow!!!"suffix="wow!!!"print(str.endswith(suffix))#Trueprint(str.endswith(suffix,20))#True 从20开始suffix="is"print(str.endswith(suffix,2,4))#Ture 从...
参考链接: Python | 字符串startswith 1.函数用途含义 Pythonstartswith() 方法用于检查字符串是否是以指定子字符串开头,如果是则返回 True,否则返回 False。如果参数 beg 和 end 指定值,则在指定范围内检查。 2.用法 Str.startswith(str, beg=0,end=len(string)); ...